Score 1–2 fresh pomegranates and place in a bowl of water. Break open the pomegranates under water to free the arils (seed sacs). The arils will sink to the bottom of the bowl and the membrane will float to the top. Sieve and put the arils in a separate bowl. Reserve 1 cup of the arils from fruit and set aside. (Refrigerate or freeze remaining arils for another use.)